docs: def update_site(sender, **kwargs):
      """
      Update `Site` object matching `SITE_ID` setting with `SITE_DOMAIN` and
      `SITE_PORT` settings.
      """
      Site = apps.get_model('sites', 'Site')
      domain = settings.SITE_DOMAIN
      if settings.SITE_PORT:
          domain += ':%s' % settings.SITE_PORT
      Site.objects.update_or_create(
          pk=settings.SITE_ID,
          defaults=dict(
              domain=domain,
              name=settings.SITE_NAME))
  
      # We set an explicit pk instead of relying on auto-incrementation,
      # so we need to reset the database sequence.
      sequence_sql = connection.ops.sequence_reset_sql(no_style(), [Site])
      if sequence_sql:
          cursor = connection.cursor()
          for command in sequence_sql:
              cursor.execute(command)